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Combined anaerobic-ozonation process for treatment of textile wastewater: Removal of acute toxicity and mutagenicity.

Punzi, Marisa LU ; Nilsson, Filip LU ; Anbalagan, Anbarasan LU ; Svensson, Britt-Marie; Jönsson, Karin LU ; Mattiasson, Bo LU and Jonstrup, Maria LU (2015) In Journal of Hazardous Materials 292. p.52-60
Abstract
A novel set up composed of an anaerobic biofilm reactor followed by ozonation was used for treatment of artificial and real textile effluents containing azo dyes. The biological treatment efficiently removed chemical oxygen demand and color. Ozonation further reduced the organic content of the effluents and was very important for the degradation of aromatic compounds, as shown by the reduction of UV absorbance. The acute toxicity toward Vibrio fischeri and the shrimp Artemia salina increased after the biological treatment. No toxicity was detected after ozonation with the exception of the synthetic effluent containing the highest concentration, 1g/l, of the azo dye Remazol Red. Both untreated and biologically treated textile effluents were... (More)
A novel set up composed of an anaerobic biofilm reactor followed by ozonation was used for treatment of artificial and real textile effluents containing azo dyes. The biological treatment efficiently removed chemical oxygen demand and color. Ozonation further reduced the organic content of the effluents and was very important for the degradation of aromatic compounds, as shown by the reduction of UV absorbance. The acute toxicity toward Vibrio fischeri and the shrimp Artemia salina increased after the biological treatment. No toxicity was detected after ozonation with the exception of the synthetic effluent containing the highest concentration, 1g/l, of the azo dye Remazol Red. Both untreated and biologically treated textile effluents were found to have mutagenic effects. The mutagenicity increased even further after 1min of ozonation. No mutagenicity was however detected in the effluents subjected to longer exposure to ozone. The results of this study suggest that the use of ozonation as short post-treatment after a biological process can be beneficial for the degradation of recalcitrant compounds and the removal of toxicity of textile wastewater. However, monitoring of toxicity and especially mutagenicity is crucial and should always be used to assess the success of a treatment strategy. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Hazardous Materials
volume
292
pages
52 - 60
publisher
Elsevier
external identifiers
  • pmid:25781375
  • wos:000353740500007
  • scopus:84924794872
ISSN
1873-3336
DOI
10.1016/j.jhazmat.2015.03.018
language
English
LU publication?
yes
id
01f02602-d0b1-4341-a701-1e81ae9106e7 (old id 5258364)
date added to LUP
2015-04-07 19:22:47
date last changed
2017-11-12 03:01:35
@article{01f02602-d0b1-4341-a701-1e81ae9106e7,
  abstract     = {A novel set up composed of an anaerobic biofilm reactor followed by ozonation was used for treatment of artificial and real textile effluents containing azo dyes. The biological treatment efficiently removed chemical oxygen demand and color. Ozonation further reduced the organic content of the effluents and was very important for the degradation of aromatic compounds, as shown by the reduction of UV absorbance. The acute toxicity toward Vibrio fischeri and the shrimp Artemia salina increased after the biological treatment. No toxicity was detected after ozonation with the exception of the synthetic effluent containing the highest concentration, 1g/l, of the azo dye Remazol Red. Both untreated and biologically treated textile effluents were found to have mutagenic effects. The mutagenicity increased even further after 1min of ozonation. No mutagenicity was however detected in the effluents subjected to longer exposure to ozone. The results of this study suggest that the use of ozonation as short post-treatment after a biological process can be beneficial for the degradation of recalcitrant compounds and the removal of toxicity of textile wastewater. However, monitoring of toxicity and especially mutagenicity is crucial and should always be used to assess the success of a treatment strategy.},
  author       = {Punzi, Marisa and Nilsson, Filip and Anbalagan, Anbarasan and Svensson, Britt-Marie and Jönsson, Karin and Mattiasson, Bo and Jonstrup, Maria},
  issn         = {1873-3336},
  language     = {eng},
  pages        = {52--60},
  publisher    = {Elsevier},
  series       = {Journal of Hazardous Materials},
  title        = {Combined anaerobic-ozonation process for treatment of textile wastewater: Removal of acute toxicity and mutagenicity.},
  url          = {http://dx.doi.org/10.1016/j.jhazmat.2015.03.018},
  volume       = {292},
  year         = {2015},
}